John w



(No Model.)

J; W. NUNAMAKER. STEM WINDING ANDSBTTING WATGH.

No. 492,612. Patentedfeb. 28, 1893.

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FFICE@ JOHN lvV. NUNAMAKER, OF CHICAGO, ILLINOIS, ASSIGNOR OFONE-FOURTII TO HARVEY L. HOPKINS, OF SAME PLACE.

STEM WINDING AND SETTING WATCH.

SPECIFICATION forming part of Letters Patent No. 492,612, dated February28, 1893.

Application filed March 14, 1892. Serial No. 424,863. (No model.)

.To a/Z whom it may concern:

Be it known that I, .Tor-IN W. NUNAMAKER, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in I IandSetting and lVinding Mechanism for lVatches, which are fully set forthin the following specification, reference being had to the accompanyingdrawings, in ro which- Figure 1 represents a plan view of a watchmovement with my invention applied; Fig.

2, a reverse plan of the same 5 Fig. 8, a section of the same, taken onthe line 3-3, of Fig. l; Fig. 4, a detail section, taken on the lineJr-4, of Fig'. l; and Fig. 5, a perspective view of the actuatingspring, detached. Figs. l and 2 of the drawings are on one scale; andthe remaining iigures upon another and enlarged scale.

Myinvention relates to mechanism for setting the hands 0E watches, bymeans of the pendant in stem winding watches, in which class the pendantis-also employed to wind the watch.

The invention consists in certain devices, whereby the hand settingmechanism is adjusted to operative position by the inward movement of asliding pendant, and I will describe in detail the construction andoperation of this mechanism as I have applied it to a watch in onepractical way.

The improvements which I believe to be new and wish to secure by LettersPatent will be defined more particularly in claims.

In the drawings, A represents the front plate of a watch movement, and,B, the back plate.

It is not necessary for an understanding` of my invention to show anddescribe the entire mechanism for winding and the entire mechanism forthe regular movement of the hands; the main parts of these devices maybe of any known construction and organization. Therefore, I have shownand will describe only the members of these mechanisms which may becalled initial to the adjustable devices, whereby the winding of thewatch or Setting ot the hands may be accomplished by the stem. r

The gear-wheel, C, mounted above the front plate, is connected up withthe drum, so that the main spring is wound by the rotation of thiswheel.

The pinion, D, is on the arbor, d, which carries the hands and so therotation of this pinion revolves the hands, as required. This mainpinion D is shown below the front plate in Fig. 3 of the drawings and onthe same arbor above the front plate is a second pinion, D.

In the train of gearing here shown, ati-ansmitting gear, E, is mountedon the i'ront plate and arranged in constant engagement with the pinionD', but this is a mere arbitrary feature. The adjustable device, wherebygearing operated by the stem of the watch, is thrown into engagementwith either the wh eel C, or the wheel E as here shown is ot an ordinarytype in its main features. It consists of a plate of irregular shape,generally known as the yoke and is designated by F in the drawings. Thisyoke is mounted above the front plate and is pivoted thereto by apivotscrew, f, and on this pivot, underneath the yoke,is j ournaled agear-wheel, F', while at the respective ends of the yoke are mountedpinions f', f2, which are both in engagement with the Wheel F and theseparts are arranged, as usual, so that by the vibration of the yoke uponits pivot, the pinion f may be brought into engagement with the windinggear or the pinion f2 into engagement with the hand setting gear.

Below the front plate is mounted the usual pinion, G, with a horizontaljournal and arranged to engage with the wheel F. The pinion is journaledby means of ahub, g, and a central perforation, g', extends through bothand is shaped to conform to the angular section, 7i, at the inner end ofthe stern, H, so

IOO

according as the yoke is adjusted to bringits gearinginto engagementwith one or the other of these trains. The device for effecting thisadjustment of the yoke is aleverspring, I, of peculiarconstruction.Itiscomposedofalong llat spring, curved to conform substantially to thecircle of the front plate and fastened at one end to the top of thelatter near the outer edge thereof and about a quarter of the way roundfrom the stem. This spring extends around near the outer edge of theplate over and beyond the journal of the pinion G and then is bentinward at its extremity to provide a straight arm, i', which is extendedover the outer end of the yoke, which it is constructed to embrace andto which it is fastened. The construction and relative arrangement ofthese parts are such that the normal action of the spring is to swingthe outer end of the yoke toward the edge of the plate and so hold thepinion f ont of engagement'. with the gearwheel C, as seen in Fig. l.About midway of the length of the spring, there is an arm, t', whichfirst extends inward over the front plate and is then' bent downwardthrough an opening', a, in said plate and then bent up in a horizontalposition and carried straight out by a section, 2, to apoint infront ofthe pinion G, when it is again bent about at right angles outward toforni a short toe, i5", projecting straight outward into the centralopening in the said pinion G, as seen in Fig. For convenience in makingthese bends, the section i2 is a little lower than the center of thepinion opening, so that a twist bend, as seen in Fig. 3, will bring thetoe into a higher plane and about centrally of the pinion opening. Whenthe stein is thrust inward the inner end thereof will come in contactwith this toe on the end of the arm 'L' and the pressure ofthe steinthereon will force it inward, thereby bending the spring, I, inward,which movement will, of course, swing the yoke in a direction to engagethe pinion f with the winding gear C and at the same time disengage thepinion from the second gear. rIhe adjustment of the yoke for winding orhand setting is, therefore, effected by the longitudinal movement of thestem, through direct action on this lever spring, which, in turn actsdirectly upon the yoke. The normal adjustment for the devices is withthe spring forced inward and the yoke swung to bring` the gear traininto engagement with the winding gear. As described above thisadjustment is effected by thrusting the stem inward and the stop catchfor the latter is arranged to engage in this position and so hold thegear train in engage ment with the winding devices. Vhenever it isdesired to set the hands the stem is simply pulled out from engagementwith its spring catch, when, of course, the lever spring is relievedfrom compression and will at ence move outward, thereby swinging theyoke to disengage the winding' gearing and bring the hand settinggearing into engagement, as seen in Fig. i, when, of course, the handsmay be set, as desired, by turning the stem in the usual way.

The position of the yoke and adjusting devices iirst described is shownin dotted lines in Fig. l, this being the adjustment for ordinary useand the latter adjustment being only occasional when it is desired toset the hands. The spring I need not necessarily be connected to theyoke, so as to move it positively, except to swing it, outward, or theconnection may be such as to vibrate the yoke in both directionspositively by the spring; in the former case a spring, J, is fastened atone end to the front plate and extended inward with its free end restingupon the inner end ofthe yoke, the parts being arranged so that thisspring will operate to vibrate the yoke in a direction to disengage thesetting gear and bring into engagement the winding gear when the yoke isreleased from the outward tension of the spring I.

iVheu the movement is taken from the case it is obvious that there willbe nothing to hold the spring I inward and so the norv mal adjustment,under these circumstances, would be to engage the hand setting; but thisis not the adjustment of the devices desired under the circumstancesnamed. I, therefore, provide a device by means of which the spring I maybe depressed or forced inward when the movement is taken out of thecase. This consists of a small cam, K, on the end of ashaft, 7u, mountedin the movement plates, as seen in Fig. Li. The cani is on the end ofthe shaft projecting through the frontplate and arranged so that it willlie directly against the outer edge of the spring I, as seen in Fie. l.At the other end a half screw or half headed screw, 7e', is turned intothe end of the shaft and set up against the back plates, as seen in Fig.4, thus making this device one of the means for securing the platestogether. New by turning the half screw in the proper direction theshaft with its cam will also be turned, so as to bring the cam intoaction against the spring I, and thereby force the latter inward andadjusting the yoke to disengage the hand setting gear and engage thewinding gear, in which adjustment it will be held when the movement isout of the case.

In the construction described above and shown in the drawings, the armon the spring I, by means of which it is moved by the stein, is arrangedso that it stands inside the plates and is operated by the end of thestem. It is obvious, however, that with only a slight modification itmaybe arranged so as to stand outside of the movement plates and beoperated by the shoulder on the stem. In this modification the arm 'i isextended outward from the outer edge of the spring I and then bent downoutside of the movement plates and brought into position where theshoulder 7L of the stem H will be brought into contact therewith, whenthe stem is thrust inward. Obviously the shoulder on the stein will, inthis movement, push the arm i inward and IIO acacia thereby force thespring I inward in just the same way as described above with the arm onthe inside of the spring and within the plates. There are othermodifications of the devices herein described and shown, especiallyofthe actuating spring, which may be made without departing from thecharacteristic features of my invention. y

'The purpose of my improvement is to provide a single spring constructedand arranged to be acted upon directly by the sliding stem and connecteddirectly or substantially so with the yoke, so that the stem actspositively upon the spring and the latter in turn positively actuatesthe adjustable yoke; Vith this understanding of my invention it isobvious that the form and relative arrangement ot the actuating springitself may be modified in a variety of ways and I do not wish to beunderstood as limiting my improvement to the particular construction andarrangement of devices here shown and described.

As stated in the description above the connection between the spring Iand the yoke hereshown, is such that the spring will positively swingthe yoke outward only. This is because an outward movement of the outerend of the yoke must be possible even when the pinion f is in engagementwith the winding gear to provide for the reverse or backward movement ofthe stem, so commonly made in Winding a watch. The spring J whileholding the yoke up to this engagement, permits the yielding movementsuggested above, The relation of the parts may be changed,ho\vevcr, andin fact the spring may be connected to positively move the yoke in bothdirections, in which case the spring should be constructed to yielditself sufiiciently to permit the vibration referred to.

Having thus described. my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a winding and hand setting mechanism for watches, a vibrating yokeF, in combination with the pinions f', f2, mounted on its respectiveends, the gear F', the tubular pinion G, the sliding stein H, the innerend of which moves in said tubular gear, and the spring I iXed at oneend and connected at its free end to the outer end of the yoke andprovided with an arm 1l bent inward and downward through the front plateand having at its extremity a toe i3 projecting into the central openingof the pinion h just in front of the inner end of the stem,substantially as described.

2. In a winding and hand setting mechanism for watches, the vibratingyoke F, in combination with the pinionsf,f2 mounted at its oppositeends, the springs I fixed at one end to the front plate and connected atthe other to the yoke, and a cam K arranged just outside of the springand adapted to be turned to force the latter inward and retain it insuch position when the movement is detached, substantially asdescribed.,

JOHN W. NUNAMAKER. Vitncsses:

CARRIE FEIGEL, A. M. BEST.

